Upsetting-press.



J. JOHNSON.

UPSETTIN G PRESS.

APPLIOATION FILED MAY 4, 1910.

THKNORRIS PETERS co, wnnmanm, n. c.

Patented Mar.7,1911.

2 SHEETS-SHEET 1.

J. JOHNSON.

UPSETTING PRESS.

APPLICATION FILED Mn 4, 1910.

Patented Mar. 7, 1911.

2 8HEETS8HEET 2.

FCE.

JUSTUS JOHNSON, OF SOUTH BETHLEHEM, PENNSYLVANIA.

UPSETTING-PRESS.

Specification of Letters Patent.

Patented Mar. 7, 1911.

Application filed May 4, 1910. Serial No. 559,349.

To all whom it may concern-.-

Be it known that I, Jns'ros JOHNSON, a citizen of the United States,residing at South Bethlehem, in the county of Northampton and State ofPennsylvania, have invented new and useful Improvements inUpsetting-Presses, of which the following is a specification.

This invention relates to i1n1 )rove1nents in upsetting presses. Theupsetting press commonly used is a horizontal machine, workingmechanically and slow moving. O11 account of its slow, retardedmovement, the forging must be heated well, and in many cases wherehighly fusible alloy steel is used and in connection with which greatcare must be exercised to prevent too high a degree of heating, theforging will be burned. A limitation is thus put upon the usefulness ofthe horizontal press and it is therefore not capable of producing allthe operations which may be required in connection with a forging ofmaterial length.

The present invention proposes a vertical upsetting press of novelconstruction and by the use of which a swift blow is imparted to theendof the forging, this operation being quicker and more efiicient thanthat of the horizontal press.

An embodiment of the invention illustrated 111 the accompanyingdrawings, wherein- Figure 1 is a side elevation of a machine inaccordance with the present invention; Fig. 2 is an elevation of a crankshaft forging shown merely to exemplify the operation of the machine;Fig. 9) is a section on the line 33 of Fig. 1.; Fig. 4; is a detailfragmentary section on the line of Fig. 3; Fig. 5 is a detailperspective view showing in disassembled relation a movable die, itsholder, and a clamp for maintaining a fixed association of the die andthe holder; and Fig. 6 is a similar view of a stationary die and itsholder.

Similar characters of reference designate corresponding parts throughoutthe several views.

The essential operating parts are an upset-ting die, as 1, a movableclamping die, as 2, and a stationary die, as 3. The dies 2 and 3 areassociated with a suitably supported base, as 4, in a manner to bespecifically set forth, and the die 1 is associated with a. hammer, as5, which travels with relation to upright guides, as 6, secured upon thebase 4.

The dies 2 and 3 are of course arranged in confronting relation, and thedie 2 is movable toward and away from the die 3. An advantageous, thoughnot obligatory means for effecting the movement of the die 2,0011- slstsof a piston, as 7, working in a cylinder 8. and moved, both operat-ivelyand retractively, by hydraulic pressure. The admission of the operatingfluid to either end of the cylinder 8 is controlled by a valve of anyapproved form and shown conventionally at 9. The nu'wements of the valve9 may be effected in any suitable manner. r-is shown, the stem of thevalve is connected to an arm. as 10, which at one end is pivoted to a"head of the cylinder 8 and at its other end is pivoted to a link, as11. The latter works in a suit able guide 12 and is provided with a pin,as 13, which engages in a fork at the end of the central arm of a Tlever, as 14. The other arms of said lever are connected to treadlerods, as 15.

The upper face of the base 4 is of course suitably recessed to receivethe dies 2 and 3, and their associated parts. The die 2 is fitted in aholder, as 16, and is held in fixed association therewith by a clamp, as17. The construction of these parts is shown in detail in Fig. 5. Theholder 16 is provided with a recess 18 opening to its front and upperfaces and into which the die 2 fits. The latter has at its rear edge andin its upper face a transverse recess or groove 19, alining with grooves20 formed in the upper face of the holder 16. The latter has in its sidefaces substantially dovetail horizontal grooves, as 21. The clamp 17 isof inverted U shape and has its lower end portions formed with inwardlateral projectioi'is, as 22, which conformably engage in the grooves21. The upper portion of the clamp 17 has an under cut face 2", whichoverlies the grooves 19 and 20 and forms therewith a keyway to receive akey 24 which is employed to maintain the association of the die 2 andthe holder 16. The clamp 17 has its lower end portions also formed withoutward lateral projections, as 25. which engage in grooves, as 26,formed longitudinally in the side faces of the recess 2'? of the base 4in which the holder 16 is fitted and has movement. The piston 7 has arod, as 28, which projects through a stuffing box at the inner end ofthe cylinder 8 and is joined to the die holder 16, thus constituting adirect connection between said piston and said die holder.

The stationary clamp die 3 is fitted in a recess, as 29, in the upperface of the base at and is connected to a clamp, as 30, by means of akey, as 31, which fits in a keyway afforded between an under-cut face 32of be employed, and the form and proportions said clamp and a recess, as33, formed at the rear edge of the upper face of the die 3. The clamp 30is generally similar to the clamp 17 and is fitted in a recess, as 34:,formed in the upper face of the base t, rearwardly of the recess 29.

The upsetting die 1 is provided on its upper face with a dovetail tang,as 35, which fits in a similarly shaped recess in the under face of thehammer 5 and is held therein by a key, as 36.

In order to provide for compendiousne'ss as well as for readyaccessibility to the dies, the hammer 5 is diagonally disposed withreference to the axis of movement of the movable die and the guides 6are arranged adjacent the ends of the hammer Said guides are of aT-shaped cross section, their central flanges projecting into vertical.grooves, as 37, formed in the end faces of the hammer, and, at theirlower ends being cut away as at 38 in order that the removal andreplacement of the dies may be readily effected. Bolt fastenings, as 39,are employed to secure the uprights upon the base, the openings throughwhich the bolts extend being of a length to provide for lateraladjustments of the guides with relation to the hammer. These adjustmentsare effected by bolts or screws, as 40, which extend through dependingextensions, as a1, of the guides and are threaded into the base, theextensions 41 fitting in recesses in the base so as to be substantiallyflush with the surface thereof.

At the lower end of the base there is provided an adjustable device forsupporting the lower end of the forging. This device may be of anyapproved character. As shown, it comprises a hollow screw post, as l3,threaded through an adjusting nut, as 4P1, and carrying a head, as 45,against which the lower end of the forging rests. The base at isprovided with a vertical slot, as 46, into which the head 45 projects,and which extends to the upper face of said base, opening under the die1, and between the dies 2 and 3.

The mechanism by which the movements of the hammer 5 are controlled, isnot shown and may be of any approved form ordinarily used in dropforging, and controlled by a treadle. Such a treadle is shownconventionally at 47.

By way of example, the operation disclosed 1s that of formmg flanges orcollars by upsetting the ends of forgmgs whether long or short. Acrank-shaft forging is shown in Fig. 2 and 1s posltioned 1n the slot a16 in the manner shown in Fig. 1, its lower end resting upon the head 15and its upper end portion being disposed coaxially with the die 1 andbetween the dies 2 and 3. The working faces of the dies are of courseshaped with regard to the character of forgmg in connection with whichthey are to of the collar or flange which is' to be produced.

In operation, the dies having been selected with regard to the characterof the forging and having been connected to the parts by which they arecarried, the head 45 is adjusted with regard to the length of theforging and the latter is positioned vertically in the slot 46, itsupper end portion being con formably fitted in the recessed face of thedie 2. Thereupon, the die 2 is caused to move toward the die 3 and tocooperate with the latter in firmly clamping the forging and maintainingthe perpendicular position thereof. The hammer is now operated to causethe die 1 to strike the upper end of the forging with a swift heavy blowthereby displacing the metal and producing the conformation desired.

No specific description herein contained is intended to put anylimitation on the claims not inherent in the language thereof.

Having fully described my invention, I claim:

1. An upsetting press comprising a base having a recessed upper face, astationary clamp fitted in the recessed face, a station ary clamping dieremovably associated with the clamp, a movable clamping die opposed tothe stationary die, a holder for the movable die and also fitted in therecessed face, clamp means for maintaining the association of themovable die and its holder, means connected to the holder of the movabledie for holding the latter in close and constant assocooperation withthe clamping dies in producing the conformation desired, and a drophammer carrying the upsetting die and with which the latter is removablyassociated.

2. An upsetting press comprising a base. a stationary clamping dieassociated with the base, a second clamping die movable in a horizontaldirection toward and away from the stationary clamping die andcooperating with the latter, the clamping dies being removablyassociated with the base, an upsetting die for cooperation with theclamping dies in producing the conformation desired, a drop hammercarrying the upsetting die, upright guides for the drop hammer, theguides being located opposite to one another and diagonally with respectto the axis of movement of the movable clamplng die, and means forholding the movable clamping die in close and constant association withthe having a recessed upper face, a stationary clamping die fitted inthe recessed face, a clamp which fixes the stationary die in therecessed face of the base and with which the stationary die is removablyassociated, a movable clamping die opposed to the stationary die, aholder fitted in the recessed face and with which the movable die isremovably associated, means connected to the holder of the movable diefor holding the latter in close and constant association with thestationary die throughout the upsetting operation, an upsetting die forcooperation with the clan'iping dies in producing the conformationdesired, a drop hammer carrying the upsetting die, and upright T-shapedguides for the drop hammer, the guides being located opposite to oneanother and diagonally with respect to the axis of movement of themovable clamping die and having the lower portions of their centralflanges cut away.

a. In an upsetting press, the combination with a base, of a movable dieassociated therewith, a holder in which the movable die is fitted, aU-shaped clamp connected to the holder and slidably associated with thebase, and a key which binds together the holder, the clamp and themovable die.

An upsetting press comprising a base formed with a vertical slotextending to its upper end, and at its upper end with recesses at eachside of the slot, a stationary clamping die fitted in one of therecesses, clamp means for holding the stationary die, a movable clampingdie opposed to and cooperating with the stationary die, a holder inwhich the movable die is fitted, the holder being in turn fitted in theother recess, means for clamping together the holder and the movabledie, operating means for the movable die, an upsetting die cooperatingwith the clamping dies, a drop hammer carrying the upsetting die, and awort: support arranged at the lower end of the slot upon which the lowerend of the forging rests, and which cooperates with the clamping dies inholding the forging in a perpendicular position.

6. In an upsetting press, a base having a recessed upper face, a diefitted in the recess of the face, a U-shaped clamp also fitted in therecess of the face, and a key for interlocltingly connecting the die andthe clamp.

7. In an upsetting press, a base having a recessed upper face, a dieholder slidably mounted in the recess of the base and in turn having arecessed face, a die fitted in the recess of the holder, a U-shapedclamp removably fitted upon the holder, and a key for interlockinglyconnecting the die and the clamp.

8. An upsetting press comprising a base, a stationary clamping dieremovably associated with the base, a second clamping die also removablyassociated with the base and movable in a horizontal direction towardand away from the stationary clamping die and cooperating with thelatter, the two clamping dies having coincident axes, an upset-ting diefor cooperation with the clamping dies for producing the conformationdesired, a drop hammer carrying the upsetting die, and a pair of uprightguides for determining the movement of the drop hammer, the guides beinglocated opposite to one another and diagonally with respect to the saidcoincident axes and the drop hammer being also located diagonally withrespect to the said coincident axes and having in its end faceslongitudinal grooves to receive the edge portions of the guides.

In testimony whereof I have hereunto set my hand in presence of twosubscribing witnesses.

JUSTUS JOHNSON. \Vitnesses Geo. Ti. BnossMAx, I. T. Han'rzoe.

Copies of this patent may be obtained for five cents each, by addressingthe Commissioner of Patents, Washington, D. C.

